Knuble last year was a bit like Betts in his last season. Good and reliable if he was already where he needed to be, but not so much if any sort of acceleration or speed was needed.

With Betts it was his shoulder and the talented cheap kids that did him in, rather than his legs... as I see it. Knuble was still good for the PP at the very least... and skipping PKs... Just use him correctly and keep him in a good frame of mind... don't 'lose' him through insulting him.